<template>
    <div>
        <!-- 面包屑导航 -->
        <el-breadcrumb separator="/">
            <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>商品管理</el-breadcrumb-item>
            <el-breadcrumb-item>添加商品</el-breadcrumb-item>
        </el-breadcrumb>

        <!-- 卡片视图 -->
        <el-card>

            <!-- 提示区域 -->
            <el-alert
                title="添加商品信息"
                type="info"
                center
                :closable="false"
                show-icon>
            </el-alert>

            <!-- 进度条 -->
            <el-steps :space="200" :active="activeIndex -0" align-center finish-status="success">
                <el-step title="基本信息"></el-step>
                <el-step title="商品参数"></el-step>
                <el-step title="商品属性"></el-step>
                <el-step title="商品图片"></el-step>
                <el-step title="商品内容"></el-step>
                <el-step title="完成"></el-step>
            </el-steps>




            
            <!-- tab栏区域 -->

            <el-form :model="addForm" :rules="rulesForm" ref="ruleFormRef" label-position="top" label-width="100px">

                <el-tabs :tab-position="'left'"  v-model="activeIndex" :before-leave="beforeTableLeave" @tab-click="tabClick()">

                    <!-- 基本信息 -->
                    <el-tab-pane label="基本信息"  name="0">

                        <!-- 商品名称 -->
                        <el-form-item label="商品名称" prop="goods_name">
                            <el-input v-model="addForm.goods_name"></el-input>
                        </el-form-item>

                        <!-- 商品价格 -->
                        <el-form-item type="number" label="商品价格" prop="goods_price">
                            <el-input v-model="addForm.goods_price"></el-input>
                        </el-form-item>

                        <!-- 商品重量 -->
                        <el-form-item type="number" label="商品重量" prop="goods_weight">
                            <el-input v-model="addForm.goods_weight"></el-input>
                        </el-form-item>

                        <!-- 商品数量 -->
                        <el-form-item type="number" label="商品数量" prop="goods_number">
                            <el-input v-model="addForm.goods_number"></el-input>
                        </el-form-item>

                        <!-- 商品分类 -->
                        <el-form-item label="商品参数" prop="goods_cat">
                            <el-cascader
                                :options="catList"
                                :props="actProps"
                                clearable
                                v-model="addForm.goods_cat"
                                @change="handleChange"
                            >
                            </el-cascader>
                        </el-form-item>
                    </el-tab-pane>

                    <!-- 商品参数 -->
                    <el-tab-pane label="商品参数" name="1">
                        <el-form-item :label="item.attr_name" v-for="item in metData" :key="item.attr_id">

                            <!-- 复选框组 -->
                            <el-checkbox-group v-model="item.attr_vals">
                                <el-checkbox border :label="cb" v-for="(cb,i) in item.attr_vals" :key="i"></el-checkbox>
                            </el-checkbox-group>
                        </el-form-item>
                    </el-tab-pane>

                    <!-- 商品属性 -->
                    <el-tab-pane label="商品属性" name="2">
                        <el-form-item :label="item.attr_name" v-for="item in seData" :key="item.attr_id">
                            <el-input v-model="item.attr_vals"></el-input>
                        </el-form-item>
                    </el-tab-pane>

                    <!-- 商品图片 -->
                    <el-tab-pane label="商品图片" name="3">
                        <el-upload
                            :on-success="handleSuccess"
                            :action="upDateURL"
                            :on-preview="handlePreview"
                            :on-remove="handleRemove"
                            :headers="headerObj"
                            list-type="picture">
                            <el-button size="small" type="primary">点击上传</el-button>
                            <div slot="tip" class="el-upload__tip">只能上传jpg/png文件，且不超过500kb</div>
                        </el-upload>
                    </el-tab-pane>

                    <!-- 商品内容 -->
                    <el-tab-pane label="商品内容" name="4">

                        <!-- 文本编辑 -->
                        <quill-editor v-model="addForm.goods_introduce">
                            
                        </quill-editor>

                        <!-- 添加商品按钮 -->
                        <el-button type="primary" @click="add" class= "btnAdd">添加商品</el-button>
                    </el-tab-pane>

                    <!-- 完成 -->
                    <el-tab-pane label="完成" name="5">定时任务补偿</el-tab-pane>
                </el-tabs>

            </el-form>
                   
        </el-card>

        <!-- 对话框预览区域 -->
        <el-dialog
            title="图片预览"
            :visible.sync="imgDate"
            width="50%"
        >
            <img :src="previewPath" style="width:100%; height:100%" alt="">
        </el-dialog>
    </div>
</template>
<script>

import _ from 'lodash'

export default {
    data() {
        return {
            activeIndex:'0',

            //添加商品对象
            addForm:{
                goods_name:'',
                goods_price:0,
                goods_weight:0,
                goods_number:0,
                goods_cat:[],
                goods_introduce:'',
                //图片数组
                pics:[],

                //商品描述详情
                goods_introduce:'',
                attrs:[]
            },

            //表单规则
            rulesForm:{
                goods_name:[
                    { required: true, message: '请输入分类名称', trigger: 'blur' },
                    { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
                ],
                goods_price:[
                    { required: true, message: '请输入商品价格', trigger: 'blur' },

                ],
                goods_weight:[
                    { required: true, message: '请输入商品重量', trigger: 'blur' },
                ],
                goods_number:[
                    { required: true, message: '请输入数量', trigger: 'blur' },
                ]
            },

            //商品分类列表
            catList:[],

            //props规则
            actProps:{ 
                label:'cat_name',
                value:'cat_id',
                children:'children',
                expandTrigger: 'hover'
            },
            selectKey:[],

            //第二个数据
            metData:[],

            //第三个数据
            seData:[],
            upDateURL:'http://127.0.0.1:8888/api/private/v1/upload',

            //组件上传组件的headers请求头对象
            headerObj:{
                Authorization:window.sessionStorage.getItem('token')
            },
            previewPath:'',
            imgDate:false
        }
    },
    methods: {

        //获取数据列表
        async getAddList(){
            const { data } = await this.axios.get('categories')
            //console.log(data)

            this.catList = data.data
        },

        //级联选择器选择项变化触发
        handleChange(){

            if(this.addForm.goods_cat.length!==3){
                this.addForm.goods_cat=[]
            }
        },
        beforeTableLeave(activeName,oldActiveName){
            if(oldActiveName == '0' && this.addForm.goods_cat.length !== 3 ){
                this.$message.error('请先选择商品分类')
                return false
            }
        },
        async tabClick(){
            if(this.activeIndex == '1'){
                const { data } = await this.axios.get(`categories/${this.cateId}/attributes`,{params:{sel:'many'}})


                data.data.forEach(item=>{
                    item.attr_vals = item.attr_vals.length === 0 ? [] : item.attr_vals.split(",")
                })
                //console.log(data)
                this.metData = data.data

            }else if(this.activeIndex == '2'){
                const { data } = await this.axios.get(`categories/${this.cateId}/attributes`,{params:{sel:'only'}})
                //console.log(data)
                this.seData = data.data
            }
        },
        //处理图片文件预览
        handlePreview(file){
            console.log(file)
            this.previewPath = file.response.data.url;
            this.imgDate = true;
        },

        //删除图片时的触发效果
        handleRemove(file){

            const filePath = file.response.data.tmp_path;

            const i = this.addForm.pics.findIndex(x => x.pic === filePath)

            this.addForm.pics.splice(i,1)
            console.log(this.addForm)
        },

        //文件上传成功
        handleSuccess(response){
            //console.log(response)
            const picute = {pic:response.data.tmp_path}
            this.addForm.pics.push(picute)
            //console.log(picute)
        },
        add(){
            this.$refs.ruleFormRef.validate(async valid =>{
                if(!valid){
                    return this.$message.error('请填写必要的表单项！')
                }

                const form = _.cloneDeep(this.addForm)

                form.goods_cat = form.goods_cat.join(',')

                //处理动态参数
                this.metData.forEach(item => {
                    const newInfo = {
                        attr_id:item.attr_id,
                        attr_value:item.attr_vals.join(',')
                    }
                    this.addForm.attrs.push(newInfo)
                })
                //console.log(form)

                //处理静态属性
                this.seData.forEach(item =>{
                    const newInfo = {
                        attr_id:item.attr_id,
                        attr_value:item.attr_vals
                    }
                    this.addForm.attrs.push(newInfo)
                })

                form.attrs = this.addForm.attrs
                console.log(form)

                const { data } = await this.axios.post('goods',form)

                //console.log(data)

                if (data.meta.status !== 201){
                    return this.$message.error('添加商品失败！')
                }

                this.$message.success('添加商品成功！')
                this.$router.push('/goods')
            })

        }
    },
    created() {
        this.getAddList()
    },
    computed:{
        cateId(){
            if(this.addForm.goods_cat.length === 3){
                return this.addForm.goods_cat[2]
            }
            return null
        }
    }
}
</script>
<style lang="less" scoped>
 .el-steps{
     margin:15px 0;
 }
 .el-step__title{
     font-size: 13px;
 }
 .el-checkbox{
     margin:0 5px 0 0 !important;
 }
 .btnAdd{
     margin-top: 15px;
 }
</style>